Horizontally swinging bracket supported seat



Feb. 19, 1952 J. o. TEMPLETON, JR 2,586,120

HORIZONTALLY SWINGING BRACKET SUPPORTED SEAT Filed Aug. 9, 194e IN VEN TOR.

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Patented Feb. 19, 1952 HORIZONTALLY SWINGING BRACKET SUPPORTED SEAT James Templeton, Jr., Winchester, Tenn. Application August 9, 1948,'Serial No. 43,226

2 Claims.

This invention relates to a seat structure adapted to be secured to chairs used by dentists, barbers, etc. One of the objects of the invention is to provide a device of this kind adapted to be attached to the base or any other suitable part of a chair for dentists, barbers, etc., and which is constructed so that the operator will be required to only slightly bend the knees, when he wishes to sit.

Another object of the invention is to provide a seat construction of the character indicated above and adapted to place the operator close to the chair and the occupant thereof.

A further object of the invention is to provide a seat construction of the character indicated, which at all times will stay under the operator with a slight upward pressure regardless of the position at the chair he might assume either sitting or standing.

A still further object of the invention is to provide a seat construction of the character indicated above, permitting full freedom of foot movements of the operator.

An additional object of the invention is to prof vide a seat construction of the character indicated above adapted to be swung around the chair into an out-of-the-way position, and including a seat or stool adapted to be locked ina position remote from the chair. y

The invention resides in the details of construction and in the combination and arrangement of the several parts of the improved seat construction whereby certain important advantages are attained, as will be hereinafter more fully set forth. It is, however, to be understood that the invention is not to be restricted or limited to the exact construction and combination of parts described in the following specification and shown in the accompanying drawings, but that such changes and modifications can be made, which fall Within the scope of the claims appended hereto definitely pointing out the novel features of the invention.

In the several figures of the drawings similar parts are indicated by similar reference characters, and in order that my invention may be better understood, I will now proceed to describe the same With reference tothe accompanying drawings wherein:

Figure 1 is a view in top plan illustrating a.

seat structure embodying the invention, a second position of certain of the parts being indicated by broken lines;

Figure 2 is a view partly in side elevation and partly in section of the structure as shown in Figurehandm. Y v

Figure 3 is a Vdetail sectional view taken substantially on the line 3--3 of Figure 1.

The seat construction as herein embodied comprises a comparatively deep socket ID closed at one of its ends and provided with an outwardly extending flange II at the closed end portion. A plurality of equispaced holes I2 are arranged in the fiange so that it can be secured to the bottom flange of a barbers or dentists chair or to any other suitable part of such chair by means of bolts or the like. A pair of bearings I3 and I4 respectively are mounted inside the bore of the socket I0. An arm A has a shaft I5 formed integrally at one of its ends and the shaft extends into the socket I0 and is rotatably supported in upright position by the bearings I3 and I4. Adjacent to the upper end of the shaft I5 the arm A has a comparatively short straight portion I6 extending at right angles to the shaft and the adjoining main portion I'I of said arm extends in a spiral curve upwardly and outwardly with respect to the end of the straight arm portion I6. At the uppermost end of the main arm portion I1 a short straight arm portion I8 is formed and a pedestal P is formed integrally with or is firmly secured to the outer end of the arm A. The upper portion I9 of the pedestal P extending over the biggest part of said pedestal is tubular and the lower portion 2U of the pedestal P is of a smaller diameter than the tubular top portion I9. The lower end portion of the smaller pedestal portion 20, is bifurcated as at 2| and a comparatively small wheel 22 is mounted rotatably between the bifurcations 2I and is adapted to roll about the axis of the shaft I5 on the iioor supporting the chair to which the seat construction is attached.

The tubular pedestal portion I9 projects a comparatively short distance above the arm A and the thickness of the upper end portion 23 of the tubular pedestal portion I9 is outwardlyA increased as at 24 to create an enlarged upper end area on the tubular pedestal portion.

A seat supporting arm B comprises a shaft portion 25 extending into the' tubular pedestal portion I9. A stop ring 26 is rigidly mounted on lthe shaft portion 25 adjacent to the lower end thereof, and a plurality of bearing members 21, such as balls or the like are arranged on top of said stop ring. A second stop ring 28 is mounted on the inner surface of the tubular pedestal portion I9 in any conventional manner at a comparatively small distance above the bearing members 21 and extends inwardly over said members but permits free passage of the shaft portion 5` of the arm B. A helicalspring 29 3 which may be of round, or fiat, stock, as preferred, is inserted into the tubular pedestal portion I9 and surrounds the shaft portion 25. The lower end portion of the spring 29 is suitably flattened and is fastened on said shaft portion above the second stop ring 28 by means of a screw 30 or the like engaging the shaft portion. A hole 3| is providedinf the walliofthe tubular pedestal portion I9"t permit the insertion of said screw 30. The upper end portion of the spring 29, which may also be suitably flattened, is secured to the wall of thetubularv pedestal portion approximately at the level of the vjunction between the arm A and the pedestal P by means of a screw 32 inserted 'through'a hole 33 provided in the wall of said pedestal portion and a hole 34 arranged in the shaft portion 25, and

endwise for the purpose.

swung on the pivot pin to a position out of line with the stop pin.

A bracket C comprises a bracket bar 50 on one end of which a sleeve 5| is formed or secured. A stud 52 or the like extends through the sleeve 5I and enters threadedly into the short straight the screw 32 engages the wall of the tubular pedestal portion diametrically opposite to the hole 33 in said wall. An anti-friction bearing comprised in lowerand upper annular elements 35 and 31, respectively, having ball bearings interposed therebetween, i's mounted within the upper portion I9 of the pedestal above the screw 32 and in encircling relation with respect to the shaft 25. One of such lelements is 'secured to the pedestal and the other one to the shaft 25.

When the shaft portion 25 of the arm B is arranged in the tubularv pedestal portion as described, the arm portion 25 is held coaxially with and oscillatingly in said tubular pedestal portion by bearing members 21 and 3B. At the same time the spring 29 urges the shaft portion 25 upwardly until the bearing members 21 contact the second stop ring 28.

The shaft portion 25 extends at a.l right angle to the main portion 38 of the arm B, which main portion is curved horizontally so that it extends toward the pivot axis of the arm A, when the arm B is connected with thejarm A as described. On the free end of the main portion 38 an upward sleeve 39 is formed or secured'and a support post 40 extends slidably through-said sleeve. A

seat 4I or a chair or the like is mounted in any f conventional manner on the top end portion of the post 40. A set screw 42 extending through the wall of the seeve 39 is adapted to engage the post 40 and secure it in any desired adjusted position. An outwardly extending fiange 43 is` formed or secured on the shaft portion 25 of the seat supporting arm B above the upper Yend vof the tubular pedestal portion I9, and on the `underside of the flange 43 a friction surface 44 is arranged by lining said under side of the ange B with a friction material 45 which may be of any suitable character such, for example, as rubberized cloth, a ber sheet, or the like, or by roughening said flange underside. When the operator sits on the seat 4I the arm B is forced downwardly against the upward pull of the spring 29 until the friction surface 44 engages the top end surface of the tubular pedestal portion I9 and prevents free pivotal movement of the arm B about the axis of the shaft portion 25, of said arm. A pair of spaced apart lugs 46 are formed on the circumferential surface of the ange 43 and extends outwardly with respect to the arm A. A postlike stop member 41 is formed or secured on Ythe upper end portion of the tubular pedestal portion I9 and protrudes upwardly therefrom between the two lugs 46, so that the movement Vof the arm B about the axis of the shaft portion 25of said arm is limited by the contact of either one of the lugs 46 with the post-like stop member 41. y l

To limit the counterclockwise swinging of the portion I6 of the arm A from below securing the bracket bar 50 pivotally onto the the arm A. On the free end of said bracket bar a support hook 53 is rigidly secured and inwardly spaced from said hook, the bar 50 carries a pin or bolt 50a on which another support hook 54 is pivotally mounted. The two hooks extend toward each other and are adapted to support between them a conventional electric foot switch 55. A pair of bolts 56 can be larranged to extend through the Shanks of the hooks 53 and 54 to secure them in cooperative working position.

The above description shows clearly, that a seat construction in accordance with the invention permits the operator to sit down by slightly bending his knees and that it will stay under the operator with a slight upward pressure regardless of the position he might assume at the chair, either sitting or standing.

I claim:

1. A seat structure adapted to be secured to the base of a dentists chair and the like, cornprising an upwardly angled arcuate arm adapted to partially encircle the chair, means for pivotally mounting the lower end portion of said arm for swinging movements about said chair, an upright pedestal rigidly connected with the upper end of said arm, a shaft depending within said pedestal, a second arcuate arm extending horizontally from the upper end of said shaft, and a seat supported on the free end of said second arm.

2. A seat structure as set forth in claim l, wherein the said pedestal is tubular and has an upper portion of a greater diameter than the lower portion thereof to receive said shaft, the lower end of said lower portion being bifurcated, a roller journaled in said bifurcation, means supporting the shaft in the said upper portion for rotation, and adjustable means for regulating the extent of rotation of said shaft and the second arm relatively to the rst arm and chair.

JAMES O. TEMPLETON, JR.

REFERENCES CITED The following references are of record in the .le of this patent:

UNITED STATES PATENTS ,Number Name Date 636,726 Hindmarsh Nov. 7, 1899 v 906,442 Meredith Dec. 8, 1908 1,391,222 Van Fleet Sept. 20, 1921 2,087,932 Zola July 27, 1937 2,449,385 Johnson Sept. 14, 1948 FOREIGN PATENTS Number Country Date 61,702 Germany Mar. 3, l1892 

